<!DOCTYPE html>
<script src="../include.js"></script>
<script>
    test(() => {
        var doc = document.implementation.createHTMLDocument("");
        doc.removeChild(doc.documentElement);
        var html = doc.appendChild(doc.createElement("html"));
        html.appendChild(doc.createElement("body"));
        html.appendChild(doc.createElement("frameset"));
        println(`BODY == ${doc.body.tagName}`);
        html.firstChild.remove();
        html.firstChild.remove();
        html.appendChild(doc.createElement("frameset"));
        html.appendChild(doc.createElement("body"));
        println(`FRAMESET == ${doc.body.tagName}`);
    });
</script>
